package com.ufox.controller;

import com.alipay.api.AlipayApiException;
import com.alipay.api.AlipayClient;
import com.alipay.api.DefaultAlipayClient;
import com.alipay.api.internal.util.AlipaySignature;
import com.alipay.api.request.AlipayTradePagePayRequest;
import com.ufox.configure.AlipayConfig;
import com.ufox.entity.Orders;
import com.ufox.service.IOrdersService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.PostMapping;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.util.Arrays;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;

@Controller
public class PayController {

    @Value("${notify_url}")
    private  String notifyUrl;


    @Value("${return_url}")
    private  String returnUrl;

    @Autowired
    private IOrdersService ordersService;


    @PostMapping("/notify")
    public void notify(HttpServletRequest request,HttpServletResponse response) throws IOException {

        //获取支付宝POST过来反馈信息qq
        Map<String,String> params = new HashMap<>();

        Map<String,String[]> requestParams = request.getParameterMap();
        for (Iterator<String> iter = requestParams.keySet().iterator(); iter.hasNext();) {
            String name =  iter.next();
            String[] values =  requestParams.get(name);

            System.out.println(name+"----"+ Arrays.toString(values));
            String valueStr = "";
            for (int i = 0; i < values.length; i++) {
                valueStr = (i == values.length - 1) ? valueStr + values[i]
                        : valueStr + values[i] + ",";
            }
            //乱码解决，这段代码在出现乱码时使用
            //valueStr = new String(valueStr.getBytes("ISO-8859-1"), "utf-8");
            params.put(name, valueStr);
        }


        boolean signVerified = false; //调用SDK验证签名
        try {
            signVerified = AlipaySignature.rsaCheckV1(params, AlipayConfig.alipay_public_key,
                    AlipayConfig.charset, AlipayConfig.sign_type);
        } catch (AlipayApiException e) {
            e.printStackTrace();
        }


        //——请在这里编写您的程序（以下代码仅作参考）——

	/* 实际验证过程建议商户务必添加以下校验：
	1、需要验证该通知数据中的out_trade_no是否为商户系统中创建的订单号，
	2、判断total_amount是否确实为该订单的实际金额（即商户订单创建时的金额），
	3、校验通知中的seller_id（或者seller_email) 是否为out_trade_no这笔单据的对应的操作方
	（有的时候，一个商户可能有多个seller_id/seller_email）
	4、验证app_id是否为该商户本身。
	*/
        if(signVerified) {//验证成功
            //商户订单号
            String out_trade_no = new String(request.getParameter("out_trade_no").getBytes("ISO-8859-1"),"UTF-8");
            String app_id = new String(request.getParameter("app_id").getBytes("ISO-8859-1"),"UTF-8");
            String total_amount = new String(request.getParameter("total_amount").getBytes("ISO-8859-1"),"UTF-8");
            //交易状态
            String trade_status = new String(request.getParameter("trade_status").getBytes("ISO-8859-1"),"UTF-8");

            System.out.println("trade_status----"+trade_status);

            if (trade_status.equals("TRADE_SUCCESS")){
                //判断该笔订单是否在商户网站中已经做过处理
                //如果没有做过处理，根据订单号（out_trade_no）在商户网站的订单系统中查到该笔订单的详细，
                // 并执行商户的业务程序
                //如果有做过处理，不执行商户的业务程序
                System.out.println("success");

                Orders order = ordersService.getById(out_trade_no);
                order.setPaystate(1);
                ordersService.updateById(order);

                response.getWriter().println("success");
            }else{
                System.out.println("-----fail");
                response.getWriter().println("fail");
            }
        }else {//验证失败
            System.out.println("-----fail");
            response.getWriter().println("fail");
        }
    }

    @GetMapping("/payOnline/{orderId}")
    public void payOnline(@PathVariable String orderId, HttpServletResponse response){
        try{
            //获得初始化的AlipayClient
            AlipayClient alipayClient = new DefaultAlipayClient(AlipayConfig.gatewayUrl,
                    AlipayConfig.app_id, AlipayConfig.merchant_private_key,
                    "json", AlipayConfig.charset,
                    AlipayConfig.alipay_public_key, AlipayConfig.sign_type);

            //设置请求参数
            AlipayTradePagePayRequest alipayRequest = new AlipayTradePagePayRequest();
            alipayRequest.setReturnUrl(returnUrl);
            alipayRequest.setNotifyUrl(notifyUrl);


            Orders order = ordersService.getById(orderId);


            //商户订单号，商户网站订单系统中唯一订单号，必填
            String out_trade_no = order.getId();
            //付款金额，必填
            String total_amount = order.getMoney()+"";
            //订单名称，必填
            String subject = "优狐购物平台支付";
            //商品描述，可空
            String body = order.getReceinfo();

            alipayRequest.setBizContent("{\"out_trade_no\":\""+ out_trade_no +"\","
                    + "\"total_amount\":\""+ total_amount +"\","
                    + "\"subject\":\""+ subject +"\","
                    + "\"body\":\""+ body +"\","
                    + "\"product_code\":\"FAST_INSTANT_TRADE_PAY\"}");


            //请求
            String result = alipayClient.pageExecute(alipayRequest).getBody();

            //输出
            response.setContentType("text/html;charset=utf-8");
            response.getWriter().println(result);
        }catch (Exception e){
            e.printStackTrace();
        }
    }
}
